linux-cve-announce - CVE-2025-21829: RDMA/rxe: Fix the warning "__rxe_cleanup+0x12c/0x170 [rdma

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Message-ID: <2025030611-CVE-2025-21829-50f9@gregkh>
Date: Thu,  6 Mar 2025 17:08:12 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2025-21829: RDMA/rxe: Fix the warning "__rxe_cleanup+0x12c/0x170 [rdma_rxe]"

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

RDMA/rxe: Fix the warning "__rxe_cleanup+0x12c/0x170 [rdma_rxe]"

The Call Trace is as below:
"
  <TASK>
  ? show_regs.cold+0x1a/0x1f
  ? __rxe_cleanup+0x12c/0x170 [rdma_rxe]
  ? __warn+0x84/0xd0
  ? __rxe_cleanup+0x12c/0x170 [rdma_rxe]
  ? report_bug+0x105/0x180
  ? handle_bug+0x46/0x80
  ? exc_invalid_op+0x19/0x70
  ? asm_exc_invalid_op+0x1b/0x20
  ? __rxe_cleanup+0x12c/0x170 [rdma_rxe]
  ? __rxe_cleanup+0x124/0x170 [rdma_rxe]
  rxe_destroy_qp.cold+0x24/0x29 [rdma_rxe]
  ib_destroy_qp_user+0x118/0x190 [ib_core]
  rdma_destroy_qp.cold+0x43/0x5e [rdma_cm]
  rtrs_cq_qp_destroy.cold+0x1d/0x2b [rtrs_core]
  rtrs_srv_close_work.cold+0x1b/0x31 [rtrs_server]
  process_one_work+0x21d/0x3f0
  worker_thread+0x4a/0x3c0
  ? process_one_work+0x3f0/0x3f0
  kthread+0xf0/0x120
  ? kthread_complete_and_exit+0x20/0x20
  ret_from_fork+0x22/0x30
  </TASK>
"
When too many rdma resources are allocated, rxe needs more time to
handle these rdma resources. Sometimes with the current timeout, rxe
can not release the rdma resources correctly.

Compared with other rdma drivers, a bigger timeout is used.

The Linux kernel CVE team has assigned CVE-2025-21829 to this issue.

Affected and fixed versions
===========================

	Issue introduced in 6.0 with commit 215d0a755e1bcd92cbe6a71a21194ce7c82ec106 and fixed in 6.1.129 with commit 720653309dd31c8a927ef5d87964578ad544980f
	Issue introduced in 6.0 with commit 215d0a755e1bcd92cbe6a71a21194ce7c82ec106 and fixed in 6.6.76 with commit 45e567800492088bc52c9abac35524b4d332a8f8
	Issue introduced in 6.0 with commit 215d0a755e1bcd92cbe6a71a21194ce7c82ec106 and fixed in 6.12.13 with commit 7a2de8126ed3801f2396720e10a03cd546a3cea1
	Issue introduced in 6.0 with commit 215d0a755e1bcd92cbe6a71a21194ce7c82ec106 and fixed in 6.13.2 with commit a7d15eaecf0d6e13226db629ae2401c8c02683e5
	Issue introduced in 6.0 with commit 215d0a755e1bcd92cbe6a71a21194ce7c82ec106 and fixed in 6.14-rc1 with commit edc4ef0e0154096d6c0cf5e06af6fc330dbad9d1

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2025-21829
will be updated if fixes are backported, please check that for the most
up to date information about this issue.

Affected files
==============

The file(s) affected by this issue are:
	drivers/infiniband/sw/rxe/rxe_pool.c

Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/720653309dd31c8a927ef5d87964578ad544980f
	https://git.kernel.org/stable/c/45e567800492088bc52c9abac35524b4d332a8f8
	https://git.kernel.org/stable/c/7a2de8126ed3801f2396720e10a03cd546a3cea1
	https://git.kernel.org/stable/c/a7d15eaecf0d6e13226db629ae2401c8c02683e5
	https://git.kernel.org/stable/c/edc4ef0e0154096d6c0cf5e06af6fc330dbad9d1